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vovangra [49]
2 years ago
14

Question 1 What is the solution of n² - 49 = 0? 0 +7 07 -7 O no solution

Mathematics
2 answers:
Sphinxa [80]2 years ago
7 0
Hey there!

This can be written as n^{2}-(7)^{2}

This is in form of \fbox{a^{2}-b^{2}} , it can be expanded as \fbox{(a-b)(a+b)}

=> (n-7)(n+7)=0
=> n -7 = 0 or n + 7 = 0
=> n = 7 or n = -7

So option 7 , -7 are correct.

Hope this is clear :)
Have a good day:)
telo118 [61]2 years ago
5 0
-7 is the correct answer have a good day
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